2 * Interworking (IEEE 802.11u)
3 * Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #include "common/ieee802_11_defs.h"
13 #include "common/gas.h"
14 #include "common/wpa_ctrl.h"
15 #include "utils/pcsc_funcs.h"
16 #include "drivers/driver.h"
17 #include "eap_common/eap_defs.h"
18 #include "eap_peer/eap_methods.h"
19 #include "wpa_supplicant_i.h"
21 #include "config_ssid.h"
25 #include "gas_query.h"
26 #include "interworking.h"
29 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
30 #define INTERWORKING_3GPP
32 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
33 #define INTERWORKING_3GPP
35 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
36 #define INTERWORKING_3GPP
41 static void interworking_next_anqp_fetch(struct wpa_supplicant
*wpa_s
);
44 static void interworking_reconnect(struct wpa_supplicant
*wpa_s
)
46 if (wpa_s
->wpa_state
>= WPA_AUTHENTICATING
) {
47 wpa_supplicant_cancel_sched_scan(wpa_s
);
48 wpa_supplicant_deauthenticate(wpa_s
,
49 WLAN_REASON_DEAUTH_LEAVING
);
51 wpa_s
->disconnected
= 0;
52 wpa_s
->reassociate
= 1;
53 wpa_supplicant_req_scan(wpa_s
, 0, 0);
57 static struct wpabuf
* anqp_build_req(u16 info_ids
[], size_t num_ids
,
64 buf
= gas_anqp_build_initial_req(0, 4 + num_ids
* 2 +
65 (extra
? wpabuf_len(extra
) : 0));
69 len_pos
= gas_anqp_add_element(buf
, ANQP_QUERY_LIST
);
70 for (i
= 0; i
< num_ids
; i
++)
71 wpabuf_put_le16(buf
, info_ids
[i
]);
72 gas_anqp_set_element_len(buf
, len_pos
);
74 wpabuf_put_buf(buf
, extra
);
76 gas_anqp_set_len(buf
);
82 static void interworking_anqp_resp_cb(void *ctx
, const u8
*dst
,
84 enum gas_query_result result
,
85 const struct wpabuf
*adv_proto
,
86 const struct wpabuf
*resp
,
89 struct wpa_supplicant
*wpa_s
= ctx
;
91 anqp_resp_cb(wpa_s
, dst
, dialog_token
, result
, adv_proto
, resp
,
93 interworking_next_anqp_fetch(wpa_s
);
97 static int interworking_anqp_send_req(struct wpa_supplicant
*wpa_s
,
104 ANQP_CAPABILITY_LIST
,
106 ANQP_NETWORK_AUTH_TYPE
,
107 ANQP_ROAMING_CONSORTIUM
,
108 ANQP_IP_ADDR_TYPE_AVAILABILITY
,
110 ANQP_3GPP_CELLULAR_NETWORK
,
113 struct wpabuf
*extra
= NULL
;
115 wpa_printf(MSG_DEBUG
, "Interworking: ANQP Query Request to " MACSTR
,
116 MAC2STR(bss
->bssid
));
118 buf
= anqp_build_req(info_ids
, sizeof(info_ids
) / sizeof(info_ids
[0]),
124 res
= gas_query_req(wpa_s
->gas
, bss
->bssid
, bss
->freq
, buf
,
125 interworking_anqp_resp_cb
, wpa_s
);
127 wpa_printf(MSG_DEBUG
, "ANQP: Failed to send Query Request");
130 wpa_printf(MSG_DEBUG
, "ANQP: Query started with dialog token "
138 struct nai_realm_eap
{
141 enum nai_realm_eap_auth_inner_non_eap inner_non_eap
;
143 u8 tunneled_cred_type
;
150 struct nai_realm_eap
*eap
;
154 static void nai_realm_free(struct nai_realm
*realms
, u16 count
)
160 for (i
= 0; i
< count
; i
++) {
161 os_free(realms
[i
].eap
);
162 os_free(realms
[i
].realm
);
168 static const u8
* nai_realm_parse_eap(struct nai_realm_eap
*e
, const u8
*pos
,
171 u8 elen
, auth_count
, a
;
175 wpa_printf(MSG_DEBUG
, "No room for EAP Method fixed fields");
180 if (pos
+ elen
> end
|| elen
< 2) {
181 wpa_printf(MSG_DEBUG
, "No room for EAP Method subfield");
187 wpa_printf(MSG_DEBUG
, "EAP Method: len=%u method=%u auth_count=%u",
188 elen
, e
->method
, auth_count
);
190 for (a
= 0; a
< auth_count
; a
++) {
193 if (pos
+ 2 > end
|| pos
+ 2 + pos
[1] > end
) {
194 wpa_printf(MSG_DEBUG
, "No room for Authentication "
195 "Parameter subfield");
203 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH
:
206 e
->inner_non_eap
= *pos
;
207 if (e
->method
!= EAP_TYPE_TTLS
)
210 case NAI_REALM_INNER_NON_EAP_PAP
:
211 wpa_printf(MSG_DEBUG
, "EAP-TTLS/PAP");
213 case NAI_REALM_INNER_NON_EAP_CHAP
:
214 wpa_printf(MSG_DEBUG
, "EAP-TTLS/CHAP");
216 case NAI_REALM_INNER_NON_EAP_MSCHAP
:
217 wpa_printf(MSG_DEBUG
, "EAP-TTLS/MSCHAP");
219 case NAI_REALM_INNER_NON_EAP_MSCHAPV2
:
220 wpa_printf(MSG_DEBUG
, "EAP-TTLS/MSCHAPV2");
224 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD
:
227 e
->inner_method
= *pos
;
228 wpa_printf(MSG_DEBUG
, "Inner EAP method: %u",
231 case NAI_REALM_EAP_AUTH_CRED_TYPE
:
235 wpa_printf(MSG_DEBUG
, "Credential Type: %u",
238 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE
:
241 e
->tunneled_cred_type
= *pos
;
242 wpa_printf(MSG_DEBUG
, "Tunneled EAP Method Credential "
243 "Type: %u", e
->tunneled_cred_type
);
246 wpa_printf(MSG_DEBUG
, "Unsupported Authentication "
247 "Parameter: id=%u len=%u", id
, len
);
248 wpa_hexdump(MSG_DEBUG
, "Authentication Parameter "
260 static const u8
* nai_realm_parse_realm(struct nai_realm
*r
, const u8
*pos
,
268 wpa_printf(MSG_DEBUG
, "No room for NAI Realm Data "
273 len
= WPA_GET_LE16(pos
); /* NAI Realm Data field Length */
275 if (pos
+ len
> end
|| len
< 3) {
276 wpa_printf(MSG_DEBUG
, "No room for NAI Realm Data "
278 len
, (unsigned int) (end
- pos
));
283 r
->encoding
= *pos
++;
285 if (pos
+ realm_len
> f_end
) {
286 wpa_printf(MSG_DEBUG
, "No room for NAI Realm "
288 realm_len
, (unsigned int) (f_end
- pos
));
291 wpa_hexdump_ascii(MSG_DEBUG
, "NAI Realm", pos
, realm_len
);
292 r
->realm
= os_malloc(realm_len
+ 1);
293 if (r
->realm
== NULL
)
295 os_memcpy(r
->realm
, pos
, realm_len
);
296 r
->realm
[realm_len
] = '\0';
299 if (pos
+ 1 > f_end
) {
300 wpa_printf(MSG_DEBUG
, "No room for EAP Method Count");
303 r
->eap_count
= *pos
++;
304 wpa_printf(MSG_DEBUG
, "EAP Count: %u", r
->eap_count
);
305 if (pos
+ r
->eap_count
* 3 > f_end
) {
306 wpa_printf(MSG_DEBUG
, "No room for EAP Methods");
309 r
->eap
= os_zalloc(r
->eap_count
* sizeof(struct nai_realm_eap
));
313 for (e
= 0; e
< r
->eap_count
; e
++) {
314 pos
= nai_realm_parse_eap(&r
->eap
[e
], pos
, f_end
);
323 static struct nai_realm
* nai_realm_parse(struct wpabuf
*anqp
, u16
*count
)
325 struct nai_realm
*realm
;
329 if (anqp
== NULL
|| wpabuf_len(anqp
) < 2)
332 pos
= wpabuf_head_u8(anqp
);
333 end
= pos
+ wpabuf_len(anqp
);
334 num
= WPA_GET_LE16(pos
);
335 wpa_printf(MSG_DEBUG
, "NAI Realm Count: %u", num
);
338 if (num
* 5 > end
- pos
) {
339 wpa_printf(MSG_DEBUG
, "Invalid NAI Realm Count %u - not "
340 "enough data (%u octets) for that many realms",
341 num
, (unsigned int) (end
- pos
));
345 realm
= os_zalloc(num
* sizeof(struct nai_realm
));
349 for (i
= 0; i
< num
; i
++) {
350 pos
= nai_realm_parse_realm(&realm
[i
], pos
, end
);
352 nai_realm_free(realm
, num
);
362 static int nai_realm_match(struct nai_realm
*realm
, const char *home_realm
)
364 char *tmp
, *pos
, *end
;
367 if (realm
->realm
== NULL
|| home_realm
== NULL
)
370 if (os_strchr(realm
->realm
, ';') == NULL
)
371 return os_strcasecmp(realm
->realm
, home_realm
) == 0;
373 tmp
= os_strdup(realm
->realm
);
379 end
= os_strchr(pos
, ';');
382 if (os_strcasecmp(pos
, home_realm
) == 0) {
397 static int nai_realm_cred_username(struct nai_realm_eap
*eap
)
399 if (eap_get_name(EAP_VENDOR_IETF
, eap
->method
) == NULL
)
400 return 0; /* method not supported */
402 if (eap
->method
!= EAP_TYPE_TTLS
&& eap
->method
!= EAP_TYPE_PEAP
) {
403 /* Only tunneled methods with username/password supported */
407 if (eap
->method
== EAP_TYPE_PEAP
&&
408 eap_get_name(EAP_VENDOR_IETF
, eap
->inner_method
) == NULL
)
411 if (eap
->method
== EAP_TYPE_TTLS
) {
412 if (eap
->inner_method
== 0 && eap
->inner_non_eap
== 0)
414 if (eap
->inner_method
&&
415 eap_get_name(EAP_VENDOR_IETF
, eap
->inner_method
) == NULL
)
417 if (eap
->inner_non_eap
&&
418 eap
->inner_non_eap
!= NAI_REALM_INNER_NON_EAP_PAP
&&
419 eap
->inner_non_eap
!= NAI_REALM_INNER_NON_EAP_CHAP
&&
420 eap
->inner_non_eap
!= NAI_REALM_INNER_NON_EAP_MSCHAP
&&
421 eap
->inner_non_eap
!= NAI_REALM_INNER_NON_EAP_MSCHAPV2
)
425 if (eap
->inner_method
&&
426 eap
->inner_method
!= EAP_TYPE_GTC
&&
427 eap
->inner_method
!= EAP_TYPE_MSCHAPV2
)
434 static int nai_realm_cred_cert(struct nai_realm_eap
*eap
)
436 if (eap_get_name(EAP_VENDOR_IETF
, eap
->method
) == NULL
)
437 return 0; /* method not supported */
439 if (eap
->method
!= EAP_TYPE_TLS
) {
440 /* Only EAP-TLS supported for credential authentication */
448 static struct nai_realm_eap
* nai_realm_find_eap(struct wpa_cred
*cred
,
449 struct nai_realm
*realm
)
454 cred
->username
== NULL
||
455 cred
->username
[0] == '\0' ||
456 ((cred
->password
== NULL
||
457 cred
->password
[0] == '\0') &&
458 (cred
->private_key
== NULL
||
459 cred
->private_key
[0] == '\0')))
462 for (e
= 0; e
< realm
->eap_count
; e
++) {
463 struct nai_realm_eap
*eap
= &realm
->eap
[e
];
464 if (cred
->password
&& cred
->password
[0] &&
465 nai_realm_cred_username(eap
))
467 if (cred
->private_key
&& cred
->private_key
[0] &&
468 nai_realm_cred_cert(eap
))
476 #ifdef INTERWORKING_3GPP
478 static int plmn_id_match(struct wpabuf
*anqp
, const char *imsi
, int mnc_len
)
484 /* See Annex A of 3GPP TS 24.234 v8.1.0 for description */
485 plmn
[0] = (imsi
[0] - '0') | ((imsi
[1] - '0') << 4);
486 plmn
[1] = imsi
[2] - '0';
487 /* default to MNC length 3 if unknown */
489 plmn
[1] |= (imsi
[5] - '0') << 4;
492 plmn
[2] = (imsi
[3] - '0') | ((imsi
[4] - '0') << 4);
496 pos
= wpabuf_head_u8(anqp
);
497 end
= pos
+ wpabuf_len(anqp
);
501 wpa_printf(MSG_DEBUG
, "Unsupported GUD version 0x%x", *pos
);
506 if (pos
+ udhl
> end
) {
507 wpa_printf(MSG_DEBUG
, "Invalid UDHL");
512 while (pos
+ 2 <= end
) {
521 if (iei
== 0 && len
> 0) {
525 for (i
= 0; i
< num
; i
++) {
528 if (os_memcmp(pos
, plmn
, 3) == 0)
529 return 1; /* Found matching PLMN */
540 static int build_root_nai(char *nai
, size_t nai_len
, const char *imsi
,
543 const char *sep
, *msin
;
545 size_t msin_len
, plmn_len
;
548 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
550 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
551 * <MNC> is zero-padded to three digits in case two-digit MNC is used
554 if (imsi
== NULL
|| os_strlen(imsi
) > 16) {
555 wpa_printf(MSG_DEBUG
, "No valid IMSI available");
558 sep
= os_strchr(imsi
, '-');
561 plmn_len
= sep
- imsi
;
562 if (plmn_len
!= 5 && plmn_len
!= 6)
565 msin_len
= os_strlen(msin
);
571 os_memcpy(pos
, imsi
, plmn_len
);
573 os_memcpy(pos
, msin
, msin_len
);
575 pos
+= os_snprintf(pos
, end
- pos
, "@wlan.mnc");
585 pos
+= os_snprintf(pos
, end
- pos
, ".mcc%c%c%c.3gppnetwork.org",
586 imsi
[0], imsi
[1], imsi
[2]);
592 static int set_root_nai(struct wpa_ssid
*ssid
, const char *imsi
, char prefix
)
595 if (build_root_nai(nai
, sizeof(nai
), imsi
, prefix
) < 0)
597 return wpa_config_set_quoted(ssid
, "identity", nai
);
600 #endif /* INTERWORKING_3GPP */
603 static int interworking_connect_3gpp(struct wpa_supplicant
*wpa_s
,
606 #ifdef INTERWORKING_3GPP
607 struct wpa_cred
*cred
;
608 struct wpa_ssid
*ssid
;
611 if (bss
->anqp_3gpp
== NULL
)
614 for (cred
= wpa_s
->conf
->cred
; cred
; cred
= cred
->next
) {
620 if (cred
->pcsc
&& wpa_s
->conf
->pcsc_reader
&& wpa_s
->scard
&&
623 mnc_len
= wpa_s
->mnc_len
;
626 #endif /* PCSC_FUNCS */
628 if (cred
->imsi
== NULL
|| !cred
->imsi
[0] ||
629 cred
->milenage
== NULL
|| !cred
->milenage
[0])
632 sep
= os_strchr(cred
->imsi
, '-');
634 (sep
- cred
->imsi
!= 5 && sep
- cred
->imsi
!= 6))
636 mnc_len
= sep
- cred
->imsi
- 3;
641 #endif /* PCSC_FUNCS */
642 if (plmn_id_match(bss
->anqp_3gpp
, imsi
, mnc_len
))
648 ie
= wpa_bss_get_ie(bss
, WLAN_EID_SSID
);
651 wpa_printf(MSG_DEBUG
, "Interworking: Connect with " MACSTR
" (3GPP)",
652 MAC2STR(bss
->bssid
));
654 ssid
= wpa_config_add_network(wpa_s
->conf
);
658 wpas_notify_network_added(wpa_s
, ssid
);
659 wpa_config_set_network_defaults(ssid
);
660 ssid
->priority
= cred
->priority
;
662 ssid
->ssid
= os_zalloc(ie
[1] + 1);
663 if (ssid
->ssid
== NULL
)
665 os_memcpy(ssid
->ssid
, ie
+ 2, ie
[1]);
666 ssid
->ssid_len
= ie
[1];
668 /* TODO: figure out whether to use EAP-SIM, EAP-AKA, or EAP-AKA' */
669 if (wpa_config_set(ssid
, "eap", "SIM", 0) < 0) {
670 wpa_printf(MSG_DEBUG
, "EAP-SIM not supported");
673 if (cred
->pcsc
&& wpa_s
->scard
&& scard_supports_umts(wpa_s
->scard
))
674 wpa_config_set(ssid
, "eap", "AKA", 0);
675 if (!cred
->pcsc
&& set_root_nai(ssid
, cred
->imsi
, '1') < 0) {
676 wpa_printf(MSG_DEBUG
, "Failed to set Root NAI");
680 if (cred
->milenage
&& cred
->milenage
[0]) {
681 if (wpa_config_set_quoted(ssid
, "password",
684 } else if (cred
->pcsc
) {
685 if (wpa_config_set_quoted(ssid
, "pcsc", "") < 0)
687 if (wpa_s
->conf
->pcsc_pin
&&
688 wpa_config_set_quoted(ssid
, "pin", wpa_s
->conf
->pcsc_pin
)
693 if (cred
->password
&& cred
->password
[0] &&
694 wpa_config_set_quoted(ssid
, "password", cred
->password
) < 0)
697 wpa_config_update_prio_list(wpa_s
->conf
);
698 interworking_reconnect(wpa_s
);
703 wpas_notify_network_removed(wpa_s
, ssid
);
704 wpa_config_remove_network(wpa_s
->conf
, ssid
->id
);
705 #endif /* INTERWORKING_3GPP */
710 int interworking_connect(struct wpa_supplicant
*wpa_s
, struct wpa_bss
*bss
)
712 struct wpa_cred
*cred
;
713 struct wpa_ssid
*ssid
;
714 struct nai_realm
*realm
;
715 struct nai_realm_eap
*eap
= NULL
;
720 if (wpa_s
->conf
->cred
== NULL
|| bss
== NULL
)
722 ie
= wpa_bss_get_ie(bss
, WLAN_EID_SSID
);
723 if (ie
== NULL
|| ie
[1] == 0) {
724 wpa_printf(MSG_DEBUG
, "Interworking: No SSID known for "
725 MACSTR
, MAC2STR(bss
->bssid
));
729 realm
= nai_realm_parse(bss
->anqp_nai_realm
, &count
);
731 wpa_printf(MSG_DEBUG
, "Interworking: Could not parse NAI "
732 "Realm list from " MACSTR
, MAC2STR(bss
->bssid
));
736 for (cred
= wpa_s
->conf
->cred
; cred
; cred
= cred
->next
) {
737 for (i
= 0; i
< count
; i
++) {
738 if (!nai_realm_match(&realm
[i
], cred
->realm
))
740 eap
= nai_realm_find_eap(cred
, &realm
[i
]);
749 if (interworking_connect_3gpp(wpa_s
, bss
) == 0) {
751 nai_realm_free(realm
, count
);
755 wpa_printf(MSG_DEBUG
, "Interworking: No matching credentials "
756 "and EAP method found for " MACSTR
,
757 MAC2STR(bss
->bssid
));
758 nai_realm_free(realm
, count
);
762 wpa_printf(MSG_DEBUG
, "Interworking: Connect with " MACSTR
,
763 MAC2STR(bss
->bssid
));
765 ssid
= wpa_config_add_network(wpa_s
->conf
);
767 nai_realm_free(realm
, count
);
770 wpas_notify_network_added(wpa_s
, ssid
);
771 wpa_config_set_network_defaults(ssid
);
772 ssid
->priority
= cred
->priority
;
774 ssid
->ssid
= os_zalloc(ie
[1] + 1);
775 if (ssid
->ssid
== NULL
)
777 os_memcpy(ssid
->ssid
, ie
+ 2, ie
[1]);
778 ssid
->ssid_len
= ie
[1];
780 if (wpa_config_set(ssid
, "eap", eap_get_name(EAP_VENDOR_IETF
,
781 eap
->method
), 0) < 0)
784 if (eap
->method
== EAP_TYPE_TTLS
&&
785 cred
->username
&& cred
->username
[0]) {
788 /* Use anonymous NAI in Phase 1 */
789 pos
= os_strchr(cred
->username
, '@');
791 size_t buflen
= 9 + os_strlen(pos
) + 1;
792 anon
= os_malloc(buflen
);
795 os_snprintf(anon
, buflen
, "anonymous%s", pos
);
796 } else if (cred
->realm
) {
797 size_t buflen
= 10 + os_strlen(cred
->realm
) + 1;
798 anon
= os_malloc(buflen
);
801 os_snprintf(anon
, buflen
, "anonymous@%s", cred
->realm
);
803 anon
= os_strdup("anonymous");
807 if (wpa_config_set_quoted(ssid
, "anonymous_identity", anon
) <
815 if (cred
->username
&& cred
->username
[0] &&
816 wpa_config_set_quoted(ssid
, "identity", cred
->username
) < 0)
819 if (cred
->password
&& cred
->password
[0] &&
820 wpa_config_set_quoted(ssid
, "password", cred
->password
) < 0)
823 if (cred
->client_cert
&& cred
->client_cert
[0] &&
824 wpa_config_set_quoted(ssid
, "client_cert", cred
->client_cert
) < 0)
827 if (cred
->private_key
&& cred
->private_key
[0] &&
828 wpa_config_set_quoted(ssid
, "private_key", cred
->private_key
) < 0)
831 if (cred
->private_key_passwd
&& cred
->private_key_passwd
[0] &&
832 wpa_config_set_quoted(ssid
, "private_key_passwd",
833 cred
->private_key_passwd
) < 0)
836 switch (eap
->method
) {
838 if (eap
->inner_method
) {
839 os_snprintf(buf
, sizeof(buf
), "\"autheap=%s\"",
840 eap_get_name(EAP_VENDOR_IETF
,
842 if (wpa_config_set(ssid
, "phase2", buf
, 0) < 0)
846 switch (eap
->inner_non_eap
) {
847 case NAI_REALM_INNER_NON_EAP_PAP
:
848 if (wpa_config_set(ssid
, "phase2", "\"auth=PAP\"", 0) <
852 case NAI_REALM_INNER_NON_EAP_CHAP
:
853 if (wpa_config_set(ssid
, "phase2", "\"auth=CHAP\"", 0)
857 case NAI_REALM_INNER_NON_EAP_MSCHAP
:
858 if (wpa_config_set(ssid
, "phase2", "\"auth=MSCHAP\"",
862 case NAI_REALM_INNER_NON_EAP_MSCHAPV2
:
863 if (wpa_config_set(ssid
, "phase2", "\"auth=MSCHAPV2\"",
870 os_snprintf(buf
, sizeof(buf
), "\"auth=%s\"",
871 eap_get_name(EAP_VENDOR_IETF
, eap
->inner_method
));
872 if (wpa_config_set(ssid
, "phase2", buf
, 0) < 0)
879 if (cred
->ca_cert
&& cred
->ca_cert
[0] &&
880 wpa_config_set_quoted(ssid
, "ca_cert", cred
->ca_cert
) < 0)
883 nai_realm_free(realm
, count
);
885 wpa_config_update_prio_list(wpa_s
->conf
);
886 interworking_reconnect(wpa_s
);
891 wpas_notify_network_removed(wpa_s
, ssid
);
892 wpa_config_remove_network(wpa_s
->conf
, ssid
->id
);
893 nai_realm_free(realm
, count
);
898 static struct wpa_cred
* interworking_credentials_available_3gpp(
899 struct wpa_supplicant
*wpa_s
, struct wpa_bss
*bss
)
901 struct wpa_cred
*cred
, *selected
= NULL
;
904 #ifdef INTERWORKING_3GPP
905 if (bss
->anqp_3gpp
== NULL
)
908 for (cred
= wpa_s
->conf
->cred
; cred
; cred
= cred
->next
) {
914 if (cred
->pcsc
&& wpa_s
->conf
->pcsc_reader
&& wpa_s
->scard
&&
917 mnc_len
= wpa_s
->mnc_len
;
920 #endif /* PCSC_FUNCS */
922 if (cred
->imsi
== NULL
|| !cred
->imsi
[0] ||
923 cred
->milenage
== NULL
|| !cred
->milenage
[0])
926 sep
= os_strchr(cred
->imsi
, '-');
928 (sep
- cred
->imsi
!= 5 && sep
- cred
->imsi
!= 6))
930 mnc_len
= sep
- cred
->imsi
- 3;
935 #endif /* PCSC_FUNCS */
936 wpa_printf(MSG_DEBUG
, "Interworking: Parsing 3GPP info from "
937 MACSTR
, MAC2STR(bss
->bssid
));
938 ret
= plmn_id_match(bss
->anqp_3gpp
, imsi
, mnc_len
);
939 wpa_printf(MSG_DEBUG
, "PLMN match %sfound", ret
? "" : "not ");
941 if (selected
== NULL
||
942 selected
->priority
< cred
->priority
)
946 #endif /* INTERWORKING_3GPP */
951 static struct wpa_cred
* interworking_credentials_available_realm(
952 struct wpa_supplicant
*wpa_s
, struct wpa_bss
*bss
)
954 struct wpa_cred
*cred
, *selected
= NULL
;
955 struct nai_realm
*realm
;
958 if (bss
->anqp_nai_realm
== NULL
)
961 if (wpa_s
->conf
->cred
== NULL
)
964 wpa_printf(MSG_DEBUG
, "Interworking: Parsing NAI Realm list from "
965 MACSTR
, MAC2STR(bss
->bssid
));
966 realm
= nai_realm_parse(bss
->anqp_nai_realm
, &count
);
968 wpa_printf(MSG_DEBUG
, "Interworking: Could not parse NAI "
969 "Realm list from " MACSTR
, MAC2STR(bss
->bssid
));
973 for (cred
= wpa_s
->conf
->cred
; cred
; cred
= cred
->next
) {
974 if (cred
->realm
== NULL
)
977 for (i
= 0; i
< count
; i
++) {
978 if (!nai_realm_match(&realm
[i
], cred
->realm
))
980 if (nai_realm_find_eap(cred
, &realm
[i
])) {
981 if (selected
== NULL
||
982 selected
->priority
< cred
->priority
)
989 nai_realm_free(realm
, count
);
995 static struct wpa_cred
* interworking_credentials_available(
996 struct wpa_supplicant
*wpa_s
, struct wpa_bss
*bss
)
998 struct wpa_cred
*cred
, *cred2
;
1000 cred
= interworking_credentials_available_realm(wpa_s
, bss
);
1001 cred2
= interworking_credentials_available_3gpp(wpa_s
, bss
);
1002 if (cred
&& cred2
&& cred2
->priority
>= cred
->priority
)
1011 static int domain_name_list_contains(struct wpabuf
*domain_names
,
1014 const u8
*pos
, *end
;
1017 len
= os_strlen(domain
);
1018 pos
= wpabuf_head(domain_names
);
1019 end
= pos
+ wpabuf_len(domain_names
);
1021 while (pos
+ 1 < end
) {
1022 if (pos
+ 1 + pos
[0] > end
)
1025 wpa_hexdump_ascii(MSG_DEBUG
, "Interworking: AP domain name",
1027 if (pos
[0] == len
&&
1028 os_strncasecmp(domain
, (const char *) (pos
+ 1), len
) == 0)
1038 static int interworking_home_sp(struct wpa_supplicant
*wpa_s
,
1039 struct wpabuf
*domain_names
)
1041 struct wpa_cred
*cred
;
1042 #ifdef INTERWORKING_3GPP
1043 char nai
[100], *realm
;
1044 #endif /* INTERWORKING_3GPP */
1046 if (domain_names
== NULL
|| wpa_s
->conf
->cred
== NULL
)
1049 for (cred
= wpa_s
->conf
->cred
; cred
; cred
= cred
->next
) {
1050 #ifdef INTERWORKING_3GPP
1052 build_root_nai(nai
, sizeof(nai
), cred
->imsi
, 0) == 0) {
1053 realm
= os_strchr(nai
, '@');
1056 wpa_printf(MSG_DEBUG
, "Interworking: Search for match "
1057 "with SIM/USIM domain %s", realm
);
1059 domain_name_list_contains(domain_names
, realm
))
1062 #endif /* INTERWORKING_3GPP */
1064 if (cred
->domain
== NULL
)
1067 wpa_printf(MSG_DEBUG
, "Interworking: Search for match with "
1068 "home SP FQDN %s", cred
->domain
);
1069 if (domain_name_list_contains(domain_names
, cred
->domain
))
1077 static int interworking_find_network_match(struct wpa_supplicant
*wpa_s
)
1079 struct wpa_bss
*bss
;
1080 struct wpa_ssid
*ssid
;
1082 dl_list_for_each(bss
, &wpa_s
->bss
, struct wpa_bss
, list
) {
1083 for (ssid
= wpa_s
->conf
->ssid
; ssid
; ssid
= ssid
->next
) {
1084 if (ssid
->disabled
|| ssid
->mode
!= WPAS_MODE_INFRA
)
1086 if (ssid
->ssid_len
!= bss
->ssid_len
||
1087 os_memcmp(ssid
->ssid
, bss
->ssid
, ssid
->ssid_len
) !=
1091 * TODO: Consider more accurate matching of security
1092 * configuration similarly to what is done in events.c
1102 static void interworking_select_network(struct wpa_supplicant
*wpa_s
)
1104 struct wpa_bss
*bss
, *selected
= NULL
, *selected_home
= NULL
;
1105 int selected_prio
= -999999, selected_home_prio
= -999999;
1106 unsigned int count
= 0;
1109 struct wpa_cred
*cred
;
1111 wpa_s
->network_select
= 0;
1113 dl_list_for_each(bss
, &wpa_s
->bss
, struct wpa_bss
, list
) {
1114 cred
= interworking_credentials_available(wpa_s
, bss
);
1118 res
= interworking_home_sp(wpa_s
, bss
->anqp_domain_name
);
1125 wpa_msg(wpa_s
, MSG_INFO
, INTERWORKING_AP MACSTR
" type=%s",
1126 MAC2STR(bss
->bssid
), type
);
1127 if (wpa_s
->auto_select
) {
1128 if (selected
== NULL
||
1129 cred
->priority
> selected_prio
) {
1131 selected_prio
= cred
->priority
;
1134 (selected_home
== NULL
||
1135 cred
->priority
> selected_home_prio
)) {
1136 selected_home
= bss
;
1137 selected_home_prio
= cred
->priority
;
1142 if (selected_home
&& selected_home
!= selected
&&
1143 selected_home_prio
>= selected_prio
) {
1144 /* Prefer network operated by the Home SP */
1145 selected
= selected_home
;
1150 * No matching network was found based on configured
1151 * credentials. Check whether any of the enabled network blocks
1152 * have matching APs.
1154 if (interworking_find_network_match(wpa_s
)) {
1155 wpa_printf(MSG_DEBUG
, "Interworking: Possible BSS "
1156 "match for enabled network configurations");
1157 interworking_reconnect(wpa_s
);
1161 wpa_msg(wpa_s
, MSG_INFO
, INTERWORKING_NO_MATCH
"No network "
1162 "with matching credentials found");
1166 interworking_connect(wpa_s
, selected
);
1170 static void interworking_next_anqp_fetch(struct wpa_supplicant
*wpa_s
)
1172 struct wpa_bss
*bss
;
1176 if (!wpa_s
->fetch_anqp_in_progress
)
1179 dl_list_for_each(bss
, &wpa_s
->bss
, struct wpa_bss
, list
) {
1180 if (!(bss
->caps
& IEEE80211_CAP_ESS
))
1182 ie
= wpa_bss_get_ie(bss
, WLAN_EID_EXT_CAPAB
);
1183 if (ie
== NULL
|| ie
[1] < 4 || !(ie
[5] & 0x80))
1184 continue; /* AP does not support Interworking */
1186 if (!(bss
->flags
& WPA_BSS_ANQP_FETCH_TRIED
)) {
1188 bss
->flags
|= WPA_BSS_ANQP_FETCH_TRIED
;
1189 wpa_msg(wpa_s
, MSG_INFO
, "Starting ANQP fetch for "
1190 MACSTR
, MAC2STR(bss
->bssid
));
1191 interworking_anqp_send_req(wpa_s
, bss
);
1197 wpa_msg(wpa_s
, MSG_INFO
, "ANQP fetch completed");
1198 wpa_s
->fetch_anqp_in_progress
= 0;
1199 if (wpa_s
->network_select
)
1200 interworking_select_network(wpa_s
);
1205 static void interworking_start_fetch_anqp(struct wpa_supplicant
*wpa_s
)
1207 struct wpa_bss
*bss
;
1209 dl_list_for_each(bss
, &wpa_s
->bss
, struct wpa_bss
, list
)
1210 bss
->flags
&= ~WPA_BSS_ANQP_FETCH_TRIED
;
1212 wpa_s
->fetch_anqp_in_progress
= 1;
1213 interworking_next_anqp_fetch(wpa_s
);
1217 int interworking_fetch_anqp(struct wpa_supplicant
*wpa_s
)
1219 if (wpa_s
->fetch_anqp_in_progress
|| wpa_s
->network_select
)
1222 wpa_s
->network_select
= 0;
1224 interworking_start_fetch_anqp(wpa_s
);
1230 void interworking_stop_fetch_anqp(struct wpa_supplicant
*wpa_s
)
1232 if (!wpa_s
->fetch_anqp_in_progress
)
1235 wpa_s
->fetch_anqp_in_progress
= 0;
1239 int anqp_send_req(struct wpa_supplicant
*wpa_s
, const u8
*dst
,
1240 u16 info_ids
[], size_t num_ids
)
1245 struct wpa_bss
*bss
;
1248 freq
= wpa_s
->assoc_freq
;
1249 bss
= wpa_bss_get_bssid(wpa_s
, dst
);
1255 wpa_printf(MSG_DEBUG
, "ANQP: Query Request to " MACSTR
" for %u id(s)",
1256 MAC2STR(dst
), (unsigned int) num_ids
);
1258 buf
= anqp_build_req(info_ids
, num_ids
, NULL
);
1262 res
= gas_query_req(wpa_s
->gas
, dst
, freq
, buf
, anqp_resp_cb
, wpa_s
);
1264 wpa_printf(MSG_DEBUG
, "ANQP: Failed to send Query Request");
1267 wpa_printf(MSG_DEBUG
, "ANQP: Query started with dialog token "
1275 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant
*wpa_s
,
1276 const u8
*sa
, u16 info_id
,
1277 const u8
*data
, size_t slen
)
1279 const u8
*pos
= data
;
1280 struct wpa_bss
*bss
= wpa_bss_get_bssid(wpa_s
, sa
);
1283 case ANQP_CAPABILITY_LIST
:
1284 wpa_msg(wpa_s
, MSG_INFO
, "RX-ANQP " MACSTR
1285 " ANQP Capability list", MAC2STR(sa
));
1287 case ANQP_VENUE_NAME
:
1288 wpa_msg(wpa_s
, MSG_INFO
, "RX-ANQP " MACSTR
1289 " Venue Name", MAC2STR(sa
));
1290 wpa_hexdump_ascii(MSG_DEBUG
, "ANQP: Venue Name", pos
, slen
);
1292 wpabuf_free(bss
->anqp_venue_name
);
1293 bss
->anqp_venue_name
= wpabuf_alloc_copy(pos
, slen
);
1296 case ANQP_NETWORK_AUTH_TYPE
:
1297 wpa_msg(wpa_s
, MSG_INFO
, "RX-ANQP " MACSTR
1298 " Network Authentication Type information",
1300 wpa_hexdump_ascii(MSG_DEBUG
, "ANQP: Network Authentication "
1303 wpabuf_free(bss
->anqp_network_auth_type
);
1304 bss
->anqp_network_auth_type
=
1305 wpabuf_alloc_copy(pos
, slen
);
1308 case ANQP_ROAMING_CONSORTIUM
:
1309 wpa_msg(wpa_s
, MSG_INFO
, "RX-ANQP " MACSTR
1310 " Roaming Consortium list", MAC2STR(sa
));
1311 wpa_hexdump_ascii(MSG_DEBUG
, "ANQP: Roaming Consortium",
1314 wpabuf_free(bss
->anqp_roaming_consortium
);
1315 bss
->anqp_roaming_consortium
=
1316 wpabuf_alloc_copy(pos
, slen
);
1319 case ANQP_IP_ADDR_TYPE_AVAILABILITY
:
1320 wpa_msg(wpa_s
, MSG_INFO
, "RX-ANQP " MACSTR
1321 " IP Address Type Availability information",
1323 wpa_hexdump(MSG_MSGDUMP
, "ANQP: IP Address Availability",
1326 wpabuf_free(bss
->anqp_ip_addr_type_availability
);
1327 bss
->anqp_ip_addr_type_availability
=
1328 wpabuf_alloc_copy(pos
, slen
);
1331 case ANQP_NAI_REALM
:
1332 wpa_msg(wpa_s
, MSG_INFO
, "RX-ANQP " MACSTR
1333 " NAI Realm list", MAC2STR(sa
));
1334 wpa_hexdump_ascii(MSG_DEBUG
, "ANQP: NAI Realm", pos
, slen
);
1336 wpabuf_free(bss
->anqp_nai_realm
);
1337 bss
->anqp_nai_realm
= wpabuf_alloc_copy(pos
, slen
);
1340 case ANQP_3GPP_CELLULAR_NETWORK
:
1341 wpa_msg(wpa_s
, MSG_INFO
, "RX-ANQP " MACSTR
1342 " 3GPP Cellular Network information", MAC2STR(sa
));
1343 wpa_hexdump_ascii(MSG_DEBUG
, "ANQP: 3GPP Cellular Network",
1346 wpabuf_free(bss
->anqp_3gpp
);
1347 bss
->anqp_3gpp
= wpabuf_alloc_copy(pos
, slen
);
1350 case ANQP_DOMAIN_NAME
:
1351 wpa_msg(wpa_s
, MSG_INFO
, "RX-ANQP " MACSTR
1352 " Domain Name list", MAC2STR(sa
));
1353 wpa_hexdump_ascii(MSG_MSGDUMP
, "ANQP: Domain Name", pos
, slen
);
1355 wpabuf_free(bss
->anqp_domain_name
);
1356 bss
->anqp_domain_name
= wpabuf_alloc_copy(pos
, slen
);
1359 case ANQP_VENDOR_SPECIFIC
:
1363 switch (WPA_GET_BE24(pos
)) {
1365 wpa_printf(MSG_DEBUG
, "Interworking: Unsupported "
1366 "vendor-specific ANQP OUI %06x",
1372 wpa_printf(MSG_DEBUG
, "Interworking: Unsupported ANQP Info ID "
1379 void anqp_resp_cb(void *ctx
, const u8
*dst
, u8 dialog_token
,
1380 enum gas_query_result result
,
1381 const struct wpabuf
*adv_proto
,
1382 const struct wpabuf
*resp
, u16 status_code
)
1384 struct wpa_supplicant
*wpa_s
= ctx
;
1390 if (result
!= GAS_QUERY_SUCCESS
)
1393 pos
= wpabuf_head(adv_proto
);
1394 if (wpabuf_len(adv_proto
) < 4 || pos
[0] != WLAN_EID_ADV_PROTO
||
1395 pos
[1] < 2 || pos
[3] != ACCESS_NETWORK_QUERY_PROTOCOL
) {
1396 wpa_printf(MSG_DEBUG
, "ANQP: Unexpected Advertisement "
1397 "Protocol in response");
1401 pos
= wpabuf_head(resp
);
1402 end
= pos
+ wpabuf_len(resp
);
1405 if (pos
+ 4 > end
) {
1406 wpa_printf(MSG_DEBUG
, "ANQP: Invalid element");
1409 info_id
= WPA_GET_LE16(pos
);
1411 slen
= WPA_GET_LE16(pos
);
1413 if (pos
+ slen
> end
) {
1414 wpa_printf(MSG_DEBUG
, "ANQP: Invalid element length "
1415 "for Info ID %u", info_id
);
1418 interworking_parse_rx_anqp_resp(wpa_s
, dst
, info_id
, pos
,
1425 static void interworking_scan_res_handler(struct wpa_supplicant
*wpa_s
,
1426 struct wpa_scan_results
*scan_res
)
1428 wpa_printf(MSG_DEBUG
, "Interworking: Scan results available - start "
1430 interworking_start_fetch_anqp(wpa_s
);
1434 int interworking_select(struct wpa_supplicant
*wpa_s
, int auto_select
)
1436 interworking_stop_fetch_anqp(wpa_s
);
1437 wpa_s
->network_select
= 1;
1438 wpa_s
->auto_select
= !!auto_select
;
1439 wpa_printf(MSG_DEBUG
, "Interworking: Start scan for network "
1441 wpa_s
->scan_res_handler
= interworking_scan_res_handler
;
1442 wpa_s
->scan_req
= 2;
1443 wpa_supplicant_req_scan(wpa_s
, 0, 0);